Standard UL1077 MCB Circuit BreakersDIN Rail Mount

Click Here For the 1, 2 & 3 Pole Breaker Sections Below

1-Pole, C Curve

1-Pole, D Curve

2-Pole, B Curve

2-Pole, C Curve

2-Pole, D Curve

3-Pole, B Curve

3-Pole, C Curve

3-Pole, D Curve

ASI's best selling UL1077 MCB Circuit Breakers provide proven supplementary protection for downstream applications. They are tested 300% (3 times at 100%) and are designed to protect the cable or wire in the event of an overvoltage or undervoltage or short circuit. The NDB2 UL1077/ CSA C22.2 No. 235 miniature circuit breakers offer superior 10kA interrupt capacity, are available in 1, 2 and 3 poles, are 18mm wide, range from 1 to 63 amps, offer C and D Trip Curves, have visual trip indication, and are RoHS compliant.

Please note that NDB2T UL489 circuit breakers may be substituted for NDB2 UL1077 circuit breakers. So if you need more of a particular NDB2, please shop NDB2T UL489 circuit breakers for a substitute.